Call of Duty: World at War (Nintendo DS) is a first person shooter video game for the Nintendo DS created as a Nintendo DS version of Call of Duty: World at War, based on its predecessor, Call of Duty 4: Modern Warfare (Nintendo DS). Although being very similar to it in a visual aspect, being developed by the same designers, it features many changes, including an improved game engine, better AI, the addition of minigames, anve

Set during the height of World War II, the Nintendo DS version of Call of Duty: World at War focuses on events that changed the course of the war. Throughout the game, the player will take control of Pvt. Rook of the United States Marines, Pvt. Dawkins of the British Special Air Service, and Pvt. Dimarkurato of the Red Army.

The story starts with the player in control of Rook in an USMC boot camp. After completing several training activities, including basic weapons training and an obstacle course, he is then sent off to Guadalcanal, near the South Pacific Ocean. There they are tasked with eliminating enemy artillery guns. The team successfully destroys the guns, and get sent on a new task: to take over a Japanese airstrip on the island of Peleliu.

Rook's squad then is deployed to the island via landing crafts, with Rook defending the craft using the mounted M2 Browning Machine Gun. The team successfully lands on the island, though accompanying squads took major casualties, leaving the task to Rook's squad. Rook's squad manages to capture the airstrip, which leads them to their new task, to find the Japanese cave system in the nearby mountains.

After ascending to the mountains, the squad discovers the caves system, but not before taking casualties in a fierce battle. The three surviving members enter the cave and destroy artillery guns found there, and retrieve Japanese intel, which results in a promotion for Rook. The intel allows American forces to conduct a theoretically successful assault on Shuri Castle on Okinawa Island. Once again, allies will arrive at the island by landing craft.

Now with multiple squads to assist, the team proceeds towards the main gates of Shuri Castle, while eliminating enemy mortar teams, and clearing out enemy supply caves and bunkers. Rooks squad then enter the castle, but are encountering heavy enemy resistance. The teams proceeds towards the west and east wings of the castle, where they take out anti-air cannons located there. Friendly air support arrives and attacks the castle, leaving the enemy and the building itself severely weakened. This allows Rook and his team to clear out enemies easily and proceed to the rooftop, where they raise the American flag.

Lifting off from a British airfield, the British campaign starts with the player in control of Dawkins in an Avro Lancaster, a British bomber. Dawkins and his team take out several German depots, but get shot down. The crew parachutes out and land in a farming district, and clear out Germans there while escaping. The team is then sent to take out German supply line running through a small village, as well as taking out an AA gun there.

With supply lines taken out, the British move to deal with another issue, German armor in the nearby town. Dawkins and his squad swiftly move through the town and eliminate the German Panzers. Dawkins and two other soldiers are then sent to the Rhine Forrest in the far north, where they are supposed to retrieve a supply drop captured by Germans. The team recovers the supplies and captures a enemy Panzer. Using the tank, they eradicate the Germans in the nearby town. With most of their efforts failing in the area, the Germans resort to sabotaging a dam in the south.

The British team arrives at the dam, but are too late, as explosive charges have already been planted along the dam. Dawkins, defended by his allies, move to disarm the charges, then use a nearby AA gun to take out German bombers trying to bomb the dam. The Germans then set up a last stand at a small war torn village, and bombard the advancing British with mortars in an attempt to drive them back. Dawkins, leads the charge and eliminates the mortars and the remaining Germans, pushing German forces back towards Berlin.

After pushing Axis forces out of Russia, the Red Army decides to go on the offensive, attacking Germany in different areas, including the town of Seelow Heights. From this point, the view changes to the eyes of Dimarkurato, a private of the Red Army participating in the Battle of Seelow Heights. The assault starts with Dimarkurato in control of a ML-20 artillery cannon, which is used to take out buildings containing German artillery; the team then proceeds to the wreckage to eliminate any survivors of the attack.

The squad then moves to a small town, where enemy snipers and machine gun nests are preventing allied forces from entering the area. Dimarkurato eliminates both threats, which allows friendlies to move in. Now promoted to the rank of Corporal, Dimarkurato takes control of the guns of a T-34 and pushes through Seelow Heights, eliminating enemy resistance. Dimarkurato then advances on foot with his squad members to send the last of the Germans fleeing.

Dimarkurato and his squad then push in to Berlin, where three squad members enter a manufacturing sector of the city. There they take out a Panzer factory, a Stuka hangar, and a munitions depot, putting Axis troops at a disadvantage. Unfortunately, Dimarkurato is the only survivor of the sabotage, so he is reassigned to a new squad, one that is tasked with retrieving German documents on nuclear weaponry.

Entering the German research facility, the squad encounters heavy resistance, including a Panzer, though it is quickly dispatched by Dimarkurato. He then pushes through the facility and recovers the research documents. Charges are then planted on the facilities fuel vats, and the squad escapes as the facility is blown to bits.

Now the squad heads towards the Reichstag on a half-track, with Dimarkurato manning the machine guns. On the way to the Reichstag, Dimarkurato is tasked with protecting the half-track and advancing friendlies with the machine guns, but is cut off due to a collapsed building blocking the way. The squad then make the rest of the journey to the Reichstag on foot.

Arriving at the Reichstag, Dimarkurato's squad received support from multiple squads and a tank. The tank blows a hole in the wall, and allows Russian troops to enter the building. After heavy fighting, Dimarkurato makes his way to the roof of the Reichstag and plants the Russian flag, signaling the defeat of Nazi Germany.

Multiplayer appears as an available game option in the Nintendo DS version of Call of Duty: World at War, alongside campaign and challenge missions. Per the name, this option focuses on multiple players together or alone attempting to complete objectives or reach goals, in a similar matter to multiplayer in console games. However, there a few differences between the two, including new playlists and features.